package cn.com.youjile.utils;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;

/**
 * @Author youjile
 * @CreateDate 2021/3/12
 * @Describe Spring工具，因为目前还没有把netty很好的整合进spring boot中（至少还有优化可以做）,所以这里提供一个Spring的工具类
 */
public class SpringUtil {

    private static ApplicationContext applicationContext;

    public static void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        if(SpringUtil.applicationContext == null) {
            SpringUtil.applicationContext = applicationContext;
        }
    }

    //获取applicationContext
    public static ApplicationContext getApplicationContext() {
        return applicationContext;
    }

    //通过name获取 Bean.
    public static Object getBean(String name){
        return getApplicationContext().getBean(name);
    }

    //通过class获取Bean.
    public static <T> T getBean(Class<T> clazz){
        return getApplicationContext().getBean(clazz);
    }

    //通过name,以及Clazz返回指定的Bean
    public static <T> T getBean(String name, Class<T> clazz){
        return getApplicationContext().getBean(name, clazz);
    }

}
